Your sock drawer will never be the same again with Pocket Socks - we're socks with a pocket! Invented from necessity, Pocket Socks provide fun & functional security for your essential items anytime, anywhere. These light compression socks for women and men (9mmHg - 12mmHg) are designed to promote circulation, reduce foot fatigue, and aid muscle recovery, making them an ideal choice for post-workout wear, airplane travel, or everyday use. Our over the calf compression knee high socks were developed as a solution for a traveler who was pick-pocketed, helping others avoid the same experience. Zip & secure any of your valuable items - the options are endless! Each pair includes 1 regular sock & 1 sock with a hand-sewn zippered pocket. The zipper is so discreet that it won't set off metal detectors at the airport, making our TSA & metal detector friendly socks your extra carry-on. They fit a range of shoe sizes, with Medium for US mens shoe sizes 8 - 12.5 & US womens shoe sizes 9 - 13, and Small for US women's shoe 6 - 9 and US men's shoe sizes 5 - 8. Size small fits calf circumference from 10 inches - 15 inches max and size medium fits a calf circumference of 12 inches - 16.9 inches. Our compression socks also feature a large hidden zipper pocket measuring 6" deep and 4.7" wide designed to hold your phone, passports, credit cards, keys, and other essentials for travel security and an extra pocket on the go! Pocket Socks Compression Socks with a pocket also serve as essential nurse accessories for work, or those constantly on the move offering support and comfort during long hours on your feet.